UCMP specimen card ID: 0000 2222 0544 2542 [detail] © 2024 University of California Museum of Paleontology

Mytilus arnoldi ID: 0000 2222 0544 2543 [detail] © 2024 University of California Museum of Paleontology

Mytilus arnoldi ID: 0000 2222 0544 2544 [detail] © 2024 University of California Museum of Paleontology

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